.block,
.wrapper .nav,
.wrapper .content {
  font-size: 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
}
body {
  padding: 0;
  margin: 0;
}
.wrapper {
  background: #ffcccc;
}
.wrapper .nav {
  color: #333;
}
.wrapper .content:hover {
  background: red;
}
